The snom 710, 720 and 760 IP phones embody smooth engineering in both functionality and appearance. The result is business-class phones with an intuitive user interface, premium wideband HD audio and sound quality (handset and speaker), and proven ergonomics. The snom 7xx series employs snom's 5th generation of SIP firmware. snom 7xx phones utilize VoIP security including support for TLS and SRTP protocols as well as VPN.